Processing math: 100%
Primes:
2020=172+192+232+292 is the sum of four consecutive prime.
2020=2+3+7+8+11+12+15+18+26+27+28+29+34+35+38+40+42+46+48+50+51+53+55+59+61+63+66+67+72+73+74+75+83+86+89+90+93+94+98+99 is the sum of all primitive roots of 101.
2020=p14p15−1.
Counting:
2020 is the number of partition of 48 into distinct parts ≠7.
Other: