λ
Sigma Notebook

621,287

331 × 1877
Deficient Odd Composite

621,287 is odd and not a perfect square. Its factorization is 331 × 1877 and its 4 divisors sum to 623,496.

Prime Factor Structure

Factorization String 331 × 1877
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 623,496
Proper Divisor Sum 2,209
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #621259 ← → #621289

Radix Representation

Decimal 621287
Binary 10010111101011100111 (20 bits)
Octal 0o2275347
Hexadecimal 0x97AE7

Divisor Catalog (4)

1 331 1,877 621,287

Collatz Trajectory (159 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

621,287 1,863,862 931,931 2,795,794 1,397,897 4,193,692 2,096,846 1,048,423 3,145,270 1,572,635 4,717,906 2,358,953 7,076,860 3,538,430 1,769,215 5,307,646 2,653,823 7,961,470 3,980,735 11,942,206 5,971,103 17,913,310 8,956,655 26,869,966 13,434,983 40,304,950 20,152,475 60,457,426 30,228,713 90,686,140 45,343,070 22,671,535 68,014,606 34,007,303 102,021,910 51,010,955 153,032,866 76,516,433 229,549,300 114,774,650 57,387,325 172,161,976 86,080,988 43,040,494 21,520,247 64,560,742 32,280,371 96,841,114 48,420,557 145,261,672 72,630,836 36,315,418 18,157,709 54,473,128 27,236,564 13,618,282 6,809,141 20,427,424 10,213,712 5,106,856

More profiles

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