36 lines
981 B
Python
36 lines
981 B
Python
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from math import floor
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def next_b(b_prev):
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b = floor(b_prev) * (b_prev - floor(b_prev) + 1)
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return b
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def euler_751():
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min_found = 2
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theta_str_orig = "2."
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while len(theta_str_orig) < 26:
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for n in range(min_found, 1000):
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theta_str_new = str(theta_str_orig) + str(n)
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b = float(theta_str_new)
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theta_str = theta_str_new.replace("2.", "")
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while theta_str != "":
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b = next_b(b)
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a_str = str(floor(b))
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# print(a_str, theta_str)
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if theta_str.startswith(a_str):
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theta_str = theta_str.replace(a_str, "", 1)
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else:
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break
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if theta_str == "":
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theta_str_orig = theta_str_new
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break
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return theta_str_orig
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if __name__ == "__main__":
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solution = euler_751()
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print("e751.py: " + str(solution))
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assert solution == "2.223561019313554106173177"
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