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Thursday, September 22, 2016

Entry 5

Given the partition function p(n), Ramanujan found,
p(5k+4)0(mod5)p(7k+5)0(mod7)p(11k+6)0(mod11) It was later proved in 2000 by Ken Ono, building on the work of A.O. Atkin, that such congruences exist modulo every integer m coprime to 6. Some examples from the link above, p(13113k+237)0(mod13) p(191014k+815655)0(mod19) p(311074k+30064597)0(mod31) Given a Ramanujan-type congruence p(Ak+B)0(modm) with m>11. Must the factorization of A involve an integer with a power >1? Also, I think the one with m=47 should involve smaller integers than the last three examples.

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